Machine for cutting plates from wood



(N0 Model.) 2 Sheets-Sheet 1.

v A. H. HALL. MACHINE FOR CUTTING PLATES PROM WOOD.

No. 598,085. Patented Feb. 1, 1398.

Wifgessas (No Model.) 2K SheetsSheet 2.

A. H. HALL.

MACHINE FOR CUTTING PLATES PROM WOOD.

Patented Feb. 1, 1898.

WHIJQSSQS PETERS co morourua. \msnmama, w c

Uivirnn Sterne ASA H. HALL, OF TRAVERSE CITY, MICHIGAN.

MACHlNE FOR CUTTING PLATES FROM WOOD.

SPECIFICATION forming part of Letters Patent No. 598,085, dated February 1, 1898.

Application filed April 15, 1897- Serial No. 632,809.

To ctZZ whom it may concern:

. Be it known that I, ASA H. HALL, a citizen'of the United States, residing at Traverse City, in the county of Grand Traverse and State of Michigan, have invented a new and useful Machine for Cutting Plates from YVood, of which the following is a specification.

The invention relates to machines for cut ting plates from wood.

The objects of the present invention are to improve the construction-of machines for cutting wooden plates from a block of wood and to provide a simple and comparatively inexpensive one which will be capable of cutting a concavo-convex plate or dish with a fiat central portion or bottom.

The invention consists in the construction and novel combination and arrangement of parts, as hereinafter fully described, illustrated in the accompanying drawings, and pointed out in the claims hereto appended.

In the drawings, Figure 1 is a side elevation of a machine constructed in accordance with this invention. Fig. 2 is a front elevation of the same. Fig. 3 is a vertical longitudinal sectional view. Fig. 4 is a detail view of the cutting-off knife. Figs. 5 and 6 are detail views of the plate or dish.

Like numeralsof reference designate corresponding parts in the several figures of the drawings.

1 designates a supportingframe having a table 2, adapted to support a block of wood 3, from which dishes are cut, and the block of wood is fed forward by a horizontal screw 4 to an oscillating cutting-off knife 5, which severs a dish from the block of wood on the downward stroke. The knife 5, which is carried by automatically-adjustable oscillating arms 6, is composed of astraight central cutting portion 7 and curved end portions 8, the terminals 9 of the knife being secured to the said oscillating arms 6. The oscillating arms 6, which are composed of sections 10 and 11, are provided with laterally-extendin g proj ections or pins 1:2, arranged in ways 13, con- The slots 13 are provided with curved end portions and have straight vertical central portions 15, and when the oscillating arms 6 swing downward the knife 5 is carried in a curved path to hollow out the upper end of a dish (N0 model.)

and then descends in a vertical direction in a straight line to form the flat central portion or bottom of the dish and completes its cutting movement in a curved line to shape the other end of the plate. The line of movement of the knife produced by the ways shapes the dish lengthwise and the particular form of the knife imparts the transverse shape of the dish to the same. The inner section. 11 of each oscillating arm is provided with a socket to receive a reduced extension 16 of the adjacent end of the outer section 10, which is slidingly connected with the inner section, whereby the arms are adapted to yield to the configuration of the ways 13. The outer ends of the sections 11 of the oscillating arms are pivoted by means of suitable pins 17 to the innerfaces of the guide-plates 14c, and the opposite ends of the arms 6 are pivotally connected to the upper terminals of pitmen 18, which have their lower ends connected to bends 19 of a shaft 20, jonrnaled on the supporting-frame at the bottom thereof. The crank-shaft 20 carries a balance or fly wheel at one end and has a pulley 22 fixed to its. other end, and it is adapted to receive motion from any suitable source. The downward movement of the knife 5 cuts off one dish and hollows out the next one, and after each cut of the knife 5 the block of wood is operated on by a vertically-reciprocating facing-knife 23, mounted in-suitable guides 24 and connectedwith a cross head or plate 25. The cross head or plate 25 is connected with a crank-bend 26 of the shaft 20 by a pitman 27. The screw or feed shaft at may be operated to advance the block of wood by any suitable mechanism.

It will be seen that the machine is exceedingly simple in its construction, and that it I is capable of cutting from a block of wood and I desire it to be particularly understood 7 that I do not limit myself to the specific construction of the extensible arms 6, as I am aware that other means may be provided for permitting the arms to travel in and conform to the configuration of the Ways; but the construction illustrated in the drawings I consider the preferred form of my invention.

What I claim is 1, In a machine of the class described, th combination of a frame adapted to support a block of wood, an oscillating cutting-off knife arranged to engage such block of Wood, means for oscillating the knife, and a substantially semicircular stationary guide receiving the knife and provided with a straight central portion, whereby the dishes severed from the block will be formed with flat central portions or bottoms,-snbstantially as described.

2. In a machine of the class described, the combination of a frame provided with Ways having curved end portions and a straight central portion, the extensible oscillating arms mounted, on the frame and engaging said Ways, and a knife carried by said arms and provided with a straight central portion and curved end portions, substantially as de scribed. i

3. In a machine of the class described, the combination of a frame provided with guideslots, oscillating arms mounted on the frame and composed of two sections slidingly connected With each other, projections carried by the outer sections of the arms and engaging the guide-slots, and a knife carried by the oscillatingarm, substantially as described.

4. In a machine of the class described, the

combination of a frame provided with guide slots, extensible oscillating arms engaging the slots, an oscillating knife carried by the arms, a vertiCally-reciprocating facing-knife, a shaft journaled on the frame and provided with crank-bends, and pitmen connected with the crank-bends and with the oscillating arms and the facing-knife, substantially as described.

55. In a machine of the class described, the combination of a frame having ways with curved end portions and straight central portions, a knife having a straight central portion and curved end portions, and arms carrying the knife and provided with adjustable -means, whereby they are permitted to conform to the configuration of and travel in the said Ways, substantially as described.

6. In a machine of the class described, the combination of a frame provided with stationary ways having curved end portions and a straight central portion, the oscillating arms engaging said ways, and a knife carried by said arms and provided with a straight central portion and curved end portions, substantially as described.

In testimony that I claim the foregoing as my own I have hereto affixed my signature in the presence of two witnesses.

ASA H. IIALL,

Witnesses:

F. E. WALKER, GEORGE E. LAcKnYJ 

